What is CVE-2026-35633?

CVE-2026-35633 is a medium-severity vulnerability in Openclaw, classified under CWE-789. CVSS score: 5.3/10. Published 2026-04-09.

How severe is CVE-2026-35633?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in Openclaw

CVE-2026-35633

OpenClaw before 2026.3.22 contains an unbounded memory allocation vulnerability in remote media HTTP error handling that allows attackers to trigger excessive memory consumption. Attackers can send crafted HTTP error responses with large b…

EPSS: 0.002 (36.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Openclaw — versions 0, 2026.3.22

Weakness classification (CWE)

CWE-789

References

GitHub Security Advisory (GHSA-4qwc-c7g9-4xcw) (third-party-advisory)
Patch Commit #1 (patch)
Patch Commit #2 (patch)
VulnCheck Advisory: OpenClaw < 2026.3.22 - Unbounded Memory Allocation via Remote Media Error Responses (third-party-advisory)

Frequently asked questions

What is CVE-2026-35633?: CVE-2026-35633 is a medium-severity vulnerability in Openclaw, classified under CWE-789. CVSS score: 5.3/10. Published 2026-04-09.
How severe is CVE-2026-35633?: Medium severity. CVSS v3 base score is 5.3 out of 10.